| DATE: |
2009-09-24 11:00 - |
| PLACE: |
KEK Bldg.4, 3F Room 345 |
| TITLE: |
Infrared Safe Observables in N=4 Super Yang-Mills Theory |
| CONTACT: |
HASHIMOTO, Michio / michioh AT post.kek.jp |
| SPEAKER: |
Professor Dmitri Kazakov (JINR-Dubna) |
| LANGUAGE: |
English |
| ABSTRACT: |
The infrared structure of MHV gluon amplitudes in N=4 super Yang-Mills theory is considered in the next-to-leading order of PT. Explicit cancellation of the infrared divergencies in properly defined inclusive cross-sections is demonstrated first in a toy example of "conformal QED" and then in real N=4 SYM theory. The remaining finite parts for some inclusive differential cross-sections are calculated analytically. In general, contrary to the virtual corrections, they do not reveal any simple structure. One example when the finite part contains just the log functions is presented. The dependence of the finite part of inclusive cross-section on external scale related to the definition of asymptotic states is discussed. |
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